Bohr Radius
The Bohr radius is a fundamental physical constant that represents the average distance between the nucleus and the electron in a hydrogen atom in its ground state, according to the Bohr model of the atom.
Its value is approximately 5.29177 × 10⁻¹¹ meters (about 0.529 angstroms).
Named after physicist Niels Bohr, who introduced the model in 1913.
It sets a natural length scale in atomic physics and quantum mechanics.
Used to describe atomic sizes and electron orbitals.
Key facts:
Bohr radius ≈ 5.29 × 10⁻¹¹ m
Represents the typical size of a hydrogen atom’s electron orbit
Fundamental to quantum physics and atomic structure
The Bohr radius is essential for understanding atomic dimensions and quantum behavior of electrons.
Statute League
A statute league is a traditional unit of distance used primarily on land and defined as 3 statute miles, which equals about 4.83 kilometers or 15,840 feet. It was commonly used in English-speaking countries for measuring distances before the metric system became widespread. The statute league is different from the nautical league, which is based on nautical miles and used at sea. Although largely obsolete today, the statute league is still found in historical texts and older maps.
No conversions available for length.